PCEP Computer Programming and Python Fundamentals — 10 Questions

Question 1

Which TWO of the following code snippets will result in a SyntaxError? (Choose two.)

Accepted Answer

if x > 5
    print('big'). Causes a SyntaxError because the `if` statement is missing a colon (`:`) after the condition, which is required for compound statements. Options A, B, C, and E are all valid Python 3 syntax. Option A uses multiple statements on one line with a semicolon. Option B calls the `print()` function correctly. Option C correctly uses a colon and indentation for the `for` loop. Option E correctly uses a colon for the `if` statement. Therefore, only D is a SyntaxError.

Answer

a = 1; b = 2

Answer

print('hello')

Answer

for i in range(5):
    print(i)

Answer

if x > 5:
    print('big')

Question 2

What will be printed?

```python
my_list = []
my_list.append('192.168.1.10')
my_list.append('255.255.255.0')
my_list.append('192.168.1.1')
print(my_list)
```

Accepted Answer

['192.168.1.10', '255.255.255.0', '192.168.1.1']. The printed output is a list containing three string elements: '192.168.1.10', '255.255.255.0', and '192.168.1.1'. When printing a list in Python, it displays each element enclosed in square brackets and separated by commas. Option C correctly shows this output. The other options have an incorrect number of elements.

Answer

['255.255.255.0']

Answer

['192.168.1.10']

Answer

['192.168.1.10', '192.168.1.1']

Question 3

Refer to the exhibit. What is the output?

Accepted Answer

6 and 12. The code begins with a = 3. The first print(a * 2) outputs 6. Then a is reassigned to a + 6, making a = 9. The second print(a + 3) outputs 12. Therefore, the output is 6 and 12, which corresponds to option A.

Answer

6 and 7

Answer

9 and 12

Answer

3 and 3

Question 4

Refer to the exhibit. What is the output?

Accepted Answer

16. The expression in the exhibit is `print(2 ** 3 * 2)`. In Python, exponentiation has higher precedence than multiplication, so `2 ** 3` is evaluated first (result 8), then multiplied by 2 to give 16. Therefore, the output is 16.

Answer

2

Answer

4

Answer

8

Question 5

A developer writes a script that prompts the user for their age and stores it in a variable. Which code snippet correctly converts the input to an integer?

Accepted Answer

age = int(input("Enter age: ")). It uses the `int()` function to convert the string returned by `input()` into an integer. The `input()` function always returns a string, so wrapping it with `int()` performs the type conversion needed for numeric operations.

Answer

age = int(input)

Answer

age = input("Enter age: ", int)

Answer

age = input(int("Enter age: "))

Question 6

Which of the following is the correct way to define a function that takes no arguments and returns the value 42?

Accepted Answer

def f(): return 42. The syntax for defining a function in Python requires the def keyword, followed by the function name, parentheses (even if no arguments), a colon, and the indented body. Option B is missing the colon after the parentheses, making it syntactically incorrect.

Answer

function f(): return 42

Answer

def f() return 42

Answer

def f: return 42

Question 7

A program uses a variable named 'list' that shadows the built-in list type. Later, the code tries to create a new list using list([1,2,3]) but gets a TypeError. What is the most likely cause?

Accepted Answer

The variable 'list' is now an integer or other non-callable type.. When a variable named 'list' is assigned a value (e.g., an integer), it shadows the built-in `list` type in the current scope. Later, calling `list([1,2,3])` attempts to call the variable `list` as a function, but since it now holds a non-callable object (like an integer), Python raises a TypeError. This is a classic name-shadowing issue in Python.

Answer

The argument [1,2,3] is invalid because it contains integers.

Answer

The list constructor expects a tuple, not a list.

Answer

The code is missing an import for the list type.

Question 8

A programmer writes: x = 5; y = 2; result = x / y. What is the type of result?

Accepted Answer

float. In Python 3, the division operator (/) always returns a floating-point number, even if both operands are integers. Since x and y are both integers (5 and 2), the result of 5 / 2 is 2.5, which is of type float. Therefore, option B is correct.

Answer

int

Answer

str

Answer

complex

Question 9

Given the code: a = [1, 2, 3]; b = a; b.append(4). What is the value of a?

Accepted Answer

[1, 2, 3, 4]. In Python, variables hold references to objects, not copies. When `b = a` is executed, both `a` and `b` point to the same list object in memory. The `append()` method modifies the list in-place, so the change is visible through both references. Thus, `a` becomes `[1, 2, 3, 4]`.

Answer

Error

Answer

[1, 2, 3]

Answer

[1, 2, 3, [4]]